CN208810233U - A kind of grinding device crushed for iron filings - Google Patents

Abstract

The utility model discloses a kind of grinding device, especially a kind of grinding device crushed for iron filings belongs to iron filings grinding device technical field；The device includes the driving device as driving and the tooth group case for being connected to crushing discaling roll, the grinding device for crushing is connected on the tooth group case, the driving device drives grinding device by tooth group case, the grinding device includes rack and at least one set of rotation axis being assemblied in rack, it is provided in the rotation axis for broken multiple groups crushing cutter, every group of crushing cutter circumference array is evenly arranged on the lateral wall of rotation axis, each crushing cutter is fixedly installed in rotation axis, the rotation axis tooth connection group case；The utility model solves the problems, such as crushing toothed roller Maintenance Difficulty in current crushing device, it is directly anchored in rotation axis using crushing cutter, in the case where needing to be serviced device, welds new crushing cutter after can directly cutting again, effective solution maintenance time period is long, improves production efficiency.

Description

A kind of grinding device crushed for iron filings

Technical field

The utility model relates to a kind of grinding device, especially a kind of grinding device crushed for iron filings belongs to iron filings Grinding device technical field.

Background technique

Iron filings (iron plane flower), belong to scrap iron material common in machining, in such as process such as lathe, planer In, the strip iron filings of more similar wood shavings can be generated.The iron filings need to recycle as iron resource, and are directed to the type iron filings Transport space is not only taken up during transportation, also, the interior efficiency that can not make full use of hauled weight in a limited space, Especially during long-distance transport, it will cause biggish transport resource waste and increase transportation cost.

For this problem, it needs to carry out processing compression to iron filings before transportation, in this process, iron filings often need to carry out It crushes, is conducive to the compression to iron filings after crushing, improve conevying efficiency and reduce transportation cost.In currently used equipment, In the case where in particular by multipair discaling roll, the wherein rooted tooth roller for being generally adopted by each pair of discaling roll is connected with driving device, An active discaling roll and a driven discaling roll are formd under the action of the driving device, is unfavorable for tooth in the structure of the design method Roller is crushed iron filings, is especially crushing the biggish iron filings of structure, the case where being short of power is being easy to appear, even certain Situation can make the rotation of driven discaling roll and the nonsynchronous situation of rotation of active discaling roll.In addition, commonly crushing discaling roll such as Fig. 6 institute Show, the main grinding device using rotation outer shaft sleeve dress for crushing, the grinding device mainly has sleeve and crushing tooth to be integrated Design, which is unfavorable for the maintenance of equipment.

Summary of the invention

The goal of the invention of the utility model is: in view of the above problems, providing a kind of powder crushed for iron filings The crushing tooth roll structure of crushing device, the device is simple, and driving method is novel, is conducive to the crush efficiency of iron filings, while utilizing and setting Standby maintenance.

The technical solution adopted in the utility model is as follows:

A kind of grinding device crushed for iron filings including the driving device as driving and is connected to crushing discaling roll Tooth group case is connected with the grinding device for crushing on the tooth group case, which drives grinding device by tooth group case, should Grinding device includes rack and at least one set of rotation axis being assemblied in rack, is provided in the rotation axis more for what is be crushed Group crushing cutter, every group of crushing cutter circumference array are evenly arranged on the lateral wall of rotation axis, and each crushing cutter is fixedly installed on rotation On axis, the rotation axis tooth connection group case.In the design, crushing cutter is individually designed on the rotating shaft, due in iron filings crushing process, It can be mixed with certain hard iron staff, iron ball etc., in crushing process, be easy to appear hard irony object damage crushing cutter, it is original Design substituted or need to shut down and remove rotation axis in the case where being safeguarded, and the mode of the design is being broken In the case where broken knife damage, it can not have to retract rotation axis, directly can be replaced or be safeguarded.

Further, driving wheel is provided in the driving device, is provided with driven wheel on tooth group case, the driving wheel with it is driven Wheel matching, to realize transmission.

Further, be driven between driving wheel and driven wheel by feed belt or transmission chain, the driving wheel it is straight Diameter is less than the diameter of driven wheel.The design method can effectively realize transmission effect, and can by the design of the diameter It realizes gear reduction, reduces the revolving speed of driving device to a certain extent, be conducive to the crushing effect of crusher.

Further, it is also coaxially arranged with the first rotating wheel on the driven wheel, which is located in tooth group case, should It is additionally provided with the second rotating wheel in tooth group case, first rotating wheel is by chain and the assembly of the second rotating wheel to realize driving second Rotating wheel rotation, second rotating wheel drive rotation axis to rotate by transmission mechanism.The purpose of the design of which be in order into One step preferably reduces the revolving speed in transmission process, in order to export the working environment that revolving speed more adapts to crusher scene, even more Avoid scrap iron from splashing in shattering process.

Further, which includes the first gear with the coaxial arrangement of the second rotating wheel, the first gear two sides It is provided with second gear and third gear, which engages assembly with second gear and third gear respectively, second tooth Wheel and third gear distinguish coaxially connected rotation axis, are rotate in same direction with realizing that driving crushes discaling roll.The design can be effectively real Rotating in same direction for discaling roll is now crushed, and realizes that double drive is driven, can effectively realize the assembly of single-tooth roller list driving, it should Assembly method effectively improves crushing effect, and improves the efficiency of crushing.

Further, the diameter of the first gear is less than the diameter of second gear and third gear, the second gear and the The diameter of three gears is equal.Which is capable of providing safer operating environment, and is conducive to turn round required for crushing iron filings Square.

A kind of grinding device crushed for iron filings of the utility model, the driving device and tooth group case have 2 groups, rotation axis Including 2 groups, every group of rotation axis includes the first rotation axis and the second rotation axis, and crushing cutter includes that multiple groups are fixedly installed on the first rotation The first crushing cutter and multiple groups on axis are fixedly installed on the second crushing cutter of second driving shaft, first rotation axis and the second rotation Axis is separately connected 1 group of tooth group case so that 2 adjacent rotation axis rotate towards each other downwards.The mode of the design is existed using rotation axis Using the intersection relative motion of the first crushing cutter and the second crushing cutter to realize that iron filings are broken during rotation.

Further, first crushing cutter and the second crushing cutter are arranged in a crossed manner, and equidistant along rotation axis axial direction Distribution forms material leakage gap between first crushing cutter and the second crushing cutter.In the design, crushing gap is the powder for iron filings It is broken, and material leakage gap is mainly used for hard iron staff, iron ball is fallen, in the case where that cannot be crushed, hard iron filings will be from material leakage Gap is fallen, so that it is bigger and damage crushing cutter to avoid the occurrence of the hard iron filings power that is squeezed.

Further, which is rectangle for broken side, the crushing cutter along the side of rotation axis be it is trapezoidal or Person's triangle or rectangle.Which directlys adopt the mode that side is plane to realize that root face is cut, the design method and existing Have and does not have arcwall face unlike design, and arcwall face be easy to cause iron filings in shattering process to be stuck in the broken mode of cutting In crushing cutter arcwall face.

Further, the crushing cutter is by being welded and fixed on the lateral wall that rotation axis is arranged in.The design of which can The effective stability for guaranteeing crushing cutter also ensures that in use more for intensity, crushing cutter and rotation axis is made to form one Body.

In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:

1, a kind of grinding device crushed for iron filings of the utility model solves crushing toothed roller in current crushing device The problem of Maintenance Difficulty, is directly anchored in rotation axis using crushing cutter, in the case where needing to be serviced device, can directly be cut Weld new crushing cutter after cutting again, the effective solution maintenance time period is long, improves production efficiency；

2, it is designed in conjunction with double roller, the falling so as to hard iron filings in the way of material leakage gap, to avoid hard iron filings The damage of crushing cutter is caused during broken, so that the efficiency that comes into force is influenced, due to the broken of iron filings primarily to compressing More spaces, and hard is not required to carry out excessive processing, thus using which can not only protective device, while also mentioning High efficiency, unlike existing structure, the design also builds the design for having lacked arcwall face, and the design effectively avoids powder Iron filings are stuck in arc groove during broken；

3, it solves the driving method of traditional grinding machine in conjunction with double-drive device, drives two powder using a driving device Broken discaling roll rotation effectively raises iron filings crushing effect, improves crush efficiency, and design scheme used by the design, which is broken through, to be passed The driving method of system, the discaling roll for crushing can be driven by driving device, be also beneficial to pulverizer site environment.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of another embodiment of the utility model driving device；

Fig. 3 is one of the structural schematic diagram that the utility model crushes discaling roll；

Fig. 4 is the second structural representation that the utility model crushes discaling roll；

Fig. 5 is the third structural representation that the utility model crushes discaling roll；

Fig. 6 is the structural schematic diagram that existing apparatus crushes discaling roll；

Fig. 7 is the schematic diagram that the utility model rotates towards each other downwards.

Marked in the figure: 1- driving device, 2- tooth group case, 3- grinding device, 31- rotation axis, the first rotation axis of 311-, 312- Second rotation axis, 32- crushing cutter, the first crushing cutter of 321-, the second crushing cutter of 322-, the 33- axis of rolling, 34- material leakage gap, 35- Rack, 4- driving wheel, 5- driven wheel, the first rotating wheel of 6-, the second rotating wheel of 7-, 8- first gear, 9- second gear, 10- Three gears.

Specific embodiment

With reference to the accompanying drawing, the utility model is described in detail.

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Embodiment 1

A kind of grinding device crushed for iron filings, as shown in Fig. 1 to Fig. 5 and Fig. 7, it is characterised in that: including conduct The driving device 1 of driving and it is connected to the tooth group case 2 for crushing discaling roll, the crushing dress for crushing is connected on the tooth group case 2 3 are set, which drives grinding device 3 by tooth group case 2, which includes rack 35 and at least one set of assembly In being provided in the rotation axis 31 in rack, the rotation axis 31 for broken multiple groups crushing cutter 32, every group of crushing cutter 32 is round All arrays are evenly arranged on the lateral wall of rotation axis, and each crushing cutter 32 is fixedly installed in rotation axis, the rotation axis tooth connection group Case.

In the present embodiment, crushing cutter is fixed at the lateral surface of rotation axis respectively as separate unit, turns in rotation axis The rotation of crushing cutter is driven in dynamic process, especially to realize the broken of iron filings during mutual rotation, and at present often Unlike crushing toothed roller, the design, the design of the structure can be realized carrying out to single separate unit for face Maintenance will make axle sleeve and axis generate bonding if directly being safeguarded in existing technology in particular by the mode of welding The case where.Therefore, the design effectively shortens time when safeguarding, improves production efficiency.

More specifically, which is assemblied in rack by the axis of rolling 33.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, set in the driving device 1 It is equipped with driving wheel 4, is provided with driven wheel 5 on tooth group case 2, which matches with driven wheel 5, to realize transmission.Which Transmission not only contributes to adjust the diameter proportion coefficient of driving wheel and driven wheel, realizes speed regulation effect, while also helping thickness It is individually safeguarded to tooth group case or to driving device.More specifically, which is driving motor.

Due to driving motor itself revolving speed quickly, and in actual operation, when crushing, does not need too fast revolving speed, base In the design concept, in another specific embodiment, pass through feed belt or conveyer chain between driving wheel 4 and driven wheel 5 Item transmission, the diameter of the driving wheel 4 are less than the diameter of driven wheel 5.In practical operation, generally driven using feed belt. In order to guarantee effect, can also be driven using transmission chain, the stability of chain is more preferable.

It is also same on the driven wheel 5 in another specific embodiment in design principle based on above-mentioned specific embodiment Axis is provided with the first rotating wheel 6, which is located in tooth group case, is additionally provided with the second rotating wheel 7 in the tooth group case 2, First rotating wheel 6 is assembled by chain and the second rotating wheel 7 to realize driving the second rotating wheel rotation, second rotating wheel 7 It is driven by transmission mechanism and crushes discaling roll rotation.The main purpose of the design is to be to form secondary speed-reducing, utilizes the structure The structure of effective smallization tooth group case is designed, and also avoids tooth group case excessive to scene land occupation when installing.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, which includes With the first gear 8 of the second rotating wheel 7 coaxial arrangement, which is provided with second gear 9 and third gear 10, The first gear 8 engages assembly with second gear 9 and third gear 10 respectively, and the second gear 9 and third gear 10 are same respectively Axis connection rotation axis drives crushing discaling roll to rotate in same direction to realize.The design method effectively realizes that driving device drives two Crush the rotation of discaling roll.As more specifical, the second gear 9 and third gear 10 connect rotation axis by shaft coupling.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, the driving device 1 and tooth Group case 2 has 2 groups, and rotation axis 31 includes 2 groups, and every group of rotation axis includes the first rotation axis 311 and the second rotation axis 312, crushing cutter 32 include that the first crushing cutter 321 that multiple groups are fixedly installed in the first rotation axis 311 and multiple groups are fixedly installed on second driving shaft The second crushing cutter 322, first rotation axis 311 and the second rotation axis 312 are separately connected 1 group of tooth group case so that adjacent 2 Rotation axis rotates towards each other downwards.As more specifical, by taking diagram as an example, first rotation 1 group of tooth group case of axis connection, the second rotation Another 1 group of tooth group case of axis connection.By adjusting the rotation direction of discaling roll, rotating towards each other downwards for discaling roll can be realized.Intersection is set It postpones, forms 2 pairs of new discaling rolls, during rotation, can according to need and realize rotating towards each other downwards for each pair of discaling roll, thus Crushing effect can effectively be promoted.More specifically, first rotation 1 group of tooth group case of axis connection, second rotation 1 group of tooth of axis connection Group case is rotate in same direction with realizing.

Certainly as in specific embodiment, it is not limited only to above-mentioned specific embodiment, then, as shown in Fig. 2, In another specific embodiment, which includes 2 first gears 8 with the coaxial arrangement of the second rotating wheel 7, first tooth It takes turns 8 two sides and is provided with second gear 9 and third gear 10, wherein 1 first gear 8 is engaged with 9/ third gear 10 of second gear Assembly, another first gear 8 and 10/ second gear 9 of third gear are assembled by chain, the second gear 9 and third gear 10 are coaxially connected with rotation axis respectively, drive crushing discaling roll to rotate towards each other downwards to realize.The design of which can be realized one A driving device drives 1 pair of crushing discaling roll, and this has rotation opposite downwards to discaling roll is crushed.List is crushed as independent Member, and two crushing discaling rolls are driven using a driving device simultaneously, to realize required double drives in present design Requirement that is dynamic and moving toward one another downwards.As more specifical design, in a wherein specific embodiment, the driving device 1 has 2 groups with tooth group case 2, and the rotation axis that every group of tooth group case 2 is connected successively is installed in parallel.

Based on above requirement, in the present embodiment, what is be previously mentioned is moved toward one another downwards, as shown in fig. 7, being illustrated as with this Example, the axis in left side rotate clockwise, and the axis on right side is rotated against gesture needle.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, the first gear 8 it is straight Diameter is less than the diameter of second gear 9 and third gear 10, and the second gear 9 is equal with the diameter of third gear 10.As more Specifically, the diameter ratio of the first gear 8 and 9/ third gear 10 of second gear is 1/5-1/2.

More specifically, in the above design, the first rotating wheel 6 is fixed on the rotating shaft, which passes through roller bearing It fixes to be conducive to rotate.Second rotating wheel 6 is secured in rotation axis, and the axis both ends are fixed to be conducive to turn by roller bearing It is dynamic.Second gear 9 and third gear 10 are fixed on the rotating shaft, and the rotation axis both ends are fixed to be conducive to turn by roller bearing Dynamic, wherein one end is connect with rotation axis by shaft coupling.

For the above specific embodiment as more specifically design, in order to preferably realize crushing effect, wherein one In specific embodiment, first rotation axis 311 and second driving shaft 312 are rotated towards each other, and from top to bottom rotate.The structure Iron filings can be not only crushed by design in shattering process, while also help broken iron filings falling from top to bottom It falls.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, first crushing cutter 321 It is arranged in a crossed manner with the second crushing cutter 322, and along rotation axis axial direction equidistantly distributed, first crushing cutter 321 and second Material leakage gap 34 is formed between crushing cutter 322.As specifically, the first crushing cutter 321 intersects equidistant point with the second crushing cutter 322 Cloth.More specifically, the width in the material leakage gap 34 is 10mm-200mm.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, the material leakage gap 34 Gap width is greater than the gap width in the crushing gap 33.It in the present embodiment, is in order to more using wider material leakage gap Good falls down hard iron filings directly.In current structure, hard iron staff and iron ball cannot be preferable in crushing process Crushing when, if cleaning up not in time, the case where to fall down, then can need to crush gap more because shearing force is biased to side Greatly, it be easy to cause the damage of crushing cutter in this case.In addition, the smallest distance is greater than the height of crushing cutter between rotation axis.And The distance is not less than 10mm.More specifically, 10mm-30mm is used as and preferably selects.The height of the crushing cutter is crushing cutter top Portion to rotation axis lateral surface length.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, which is used for Broken side is rectangle.Certainly, as more specifical, which is planar structure for broken side, and The side is rough side.The design method can effectively improve crushing effect, meanwhile, crushing cutter will not be caused broken Iron filings are got lodged in arc groove in the process, to effectively guarantee broken smooth.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, the crushing cutter 32 along turn The side of moving axis is trapezoidal or triangle or rectangle.As more specifical, in present embodiment, the crushing cutter 32 is along turning The side of moving axis is trapezoidal or triangle.This can effectively promote the bearing capacity of crushing cutter with the frame mode, be conducive to The rigidity of the bearing capacity.As further design, in another specific embodiment, in order to improve the wearability of crushing cutter Can, the outside face of the crushing cutter 32 is additionally provided with wearing layer.And based on the considerations of rigidity and performance, wherein a specific implementation In mode, the crushing cutter 32 is by quenching treatment.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, which is closed It is symmetrical in bottom center and the straight line where rotation axis axial connecting line.That is, the crushing cutter is regular texture, and about center line pair Claim, the axial line of the rotation axis intersects with the center line.As more specifical, crushing cutter is symmetrical about center line, the center The extended line of line intersects at rotation axis axis, and perpendicular to the axis of rotation axis.

In design principle based on above-mentioned specific embodiment, in another specific embodiment, which passes through It is welded and fixed on the lateral wall that rotation axis is set.As specific mode of operation, it is provided with pad in the rotation axis 31, it will Crushing cutter is fixed by welding on pad.During actual maintenance, since crushing cutter damage can then cut lower damage Crushing cutter, then weld new crushing cutter.As the mode of another substitution, the lower part of the crushing cutter is bolt arrangement, should Threaded hole is provided in rotation axis, the mode of being bolted carries out assembly fixation.

Embodiment 2

As shown in fig. 6, unlike the first embodiment, the crushing discaling roll in this programme includes rotation axis, the rotation axis peripheral hardware It is equipped with axle sleeve, crushing cutter is made into integration with axle sleeve, and it is arcwall face which, which is for broken side,.More specifically, should Crushing cutter is in wolf's fang structure.More specifically, after arranged in a crossed manner between the first crushing cutter and the second crushing cutter, the gap of formation is equal For crushing gap.

As the existing design for crushing discaling roll, structure is unfavorable for the maintenance after discaling roll breakage, needs to stop when safeguarding Rotation axis to be removed after machine to be safeguarded again, which affects the crushing efficiency of iron filings, additionally, due to the crushing cutter self structure, In shattering process, which, which is easy to appear card, the problem of iron filings, once will be unfavorable for certain degree to iron filings It is broken.Simultaneously as the design in gap, present embodiment is not identical as embodiment 1, for the design primarily directed to hard The considerations of iron staff and the material of iron ball class.The disintegrating process of iron filings is mainly the compression process for considering iron filings, and in rear work Skill also will continue to squeeze the design method in blocking, different from the present embodiment embodiment 1 to be the protection sufficiently to device Consider, and take new structure design also meet after technique process required for crushing effect.

In conclusion a kind of grinding device crushed for iron filings of the utility model is solved in current crushing device and is broken It the problem of broken discaling roll Maintenance Difficulty, is directly anchored in rotation axis using crushing cutter, it, can in the case where needing to be serviced device Weld new crushing cutter after directly cutting again, the effective solution maintenance time period is long, improves production efficiency.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of grinding device crushed for iron filings, it is characterised in that: including the driving device (1) and connection as driving The grinding device (3) for crushing, the driving device (1) are connected in the tooth group case (2) for crushing discaling roll, on the tooth group case (2) Grinding device (3) are driven by tooth group case (2), which includes that rack (35) and at least one set are assemblied in rack On rotation axis (31), be provided in the rotation axis (31) for broken multiple groups crushing cutter (32), every group of crushing cutter (32) Circumference array is evenly arranged on the lateral wall of rotation axis, and each crushing cutter (32) is fixedly installed in rotation axis, the rotation axis connection Tooth group case.

2. a kind of grinding device crushed for iron filings as described in claim 1, it is characterised in that: in the driving device (1) It is provided with driving wheel (4), driven wheel (5) is provided on tooth group case (2), which matches with driven wheel (5), to realize Transmission.

3. a kind of grinding device crushed for iron filings as claimed in claim 2, it is characterised in that: driving wheel (4) with it is driven It takes turns and is driven between (5) by feed belt or transmission chain, the diameter of the driving wheel (4) is less than the diameter of driven wheel (5).

4. a kind of grinding device crushed for iron filings as claimed in claim 3, it is characterised in that: on the driven wheel (5) also The first rotating wheel (6) are coaxially arranged with, which is located in tooth group case, is additionally provided with second in the tooth group case (2) Rotating wheel (7), first rotating wheel (6) are assembled by chain and the second rotating wheel (7) to realize driving the second rotating wheel rotation, Second rotating wheel (7) drives rotation axis rotation by transmission mechanism.

5. a kind of grinding device crushed for iron filings as claimed in claim 4, it is characterised in that: the transmission mechanism include with The first gear (8) of second rotating wheel (7) coaxial arrangement, which is provided with second gear (9) and third tooth It takes turns (10), which engages assembly with second gear (9) and third gear (10) respectively, the second gear (9) and the The coaxially connected rotation axis of three gears (10) difference drives crushing discaling roll to rotate in same direction to realize.

6. a kind of grinding device crushed for iron filings as claimed in claim 5, it is characterised in that: the first gear (8) Diameter is less than the diameter of second gear (9) and third gear (10), the diameter phase of the second gear (9) and third gear (10) Deng.

7. a kind of grinding device crushed for iron filings as claimed in claim 5, it is characterised in that: the driving device (1) with Tooth group case (2) has 2 groups, and rotation axis (31) includes 2 groups, and every group of rotation axis includes the first rotation axis (311) and the second rotation axis (312), crushing cutter (32) includes that the first crushing cutter (321) that multiple groups are fixedly installed on the first rotation axis (311) and multiple groups are solid Surely it is set to the second crushing cutter (322) of second driving shaft, which connects respectively with the second rotation axis (312) 1 group of tooth group case is connect so that 2 adjacent rotation axis rotate towards each other downwards.

8. a kind of grinding device crushed for iron filings as claimed in claim 7, it is characterised in that: first crushing cutter (321) arranged in a crossed manner with the second crushing cutter (322), and along rotation axis axial direction equidistantly distributed, first crushing cutter (321) material leakage gap (34) are formed between the second crushing cutter (322).

9. a kind of grinding device crushed for iron filings as described in claim 1, it is characterised in that: the crushing cutter (32) is used for Broken side is rectangle, which is trapezoidal or triangle or rectangle along the side of rotation axis.

10. a kind of grinding device crushed for iron filings as described in claim 1, it is characterised in that: the crushing cutter (32) is logical It crosses on the lateral wall for being welded and fixed and rotation axis being set.